find_program(SPHINX_EXECUTABLE NAMES sphinx-build sphinx-build-3
        HINTS $ENV{SPHINX_DIR}
        PATH_SUFFIXES bin
        DOC "Sphinx documentation generator"
        )

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Sphinx DEFAULT_MSG SPHINX_EXECUTABLE)

mark_as_advanced(SPHINX_EXECUTABLE)
